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Repairing the Bottom of a Bifold Door Bifold doors can be great for saving space however, they can be troublesome when they begin to bow or scrape against the floor. The good news is that these problems are usually fixable with a few simple adjustments. If your bifold doors scrape on the floor, this could be due to a broken track or worn roller. The damaged rollers should be replaced. Bottom pivot As time passes the pivot at the bottom of a bifold door can loosen or even fall out.
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